Ether on carbonylation gives

Options

A. Alkanoic acid
B. Alkanone
C. Alkyl alkanoate
D. Alkanal

Answer

To solve the question "Ether on carbonylation gives," we need to analyze the reaction of ethers when they undergo carbonylation.

### Step-by-Step Solution:

1. **Understanding Carbonylation**:
Carbonylation is a chemical reaction where a compound reacts with carbon monoxide (CO) in the presence of a catalyst to form a carbonyl compound. In the case of ethers, this involves the introduction of a carbonyl group (C=O) into the ether structure.

2. **Identifying the Ether**:
Let's consider diethyl ether as our example ether. The structure of diethyl ether is:
\[ \text{C}_2\text{H}_5\text{O}\text{C}_2\text{H}_5 \]
where the oxygen atom connects two ethyl groups.

3. **Reaction with Carbon Monoxide**:
When diethyl ether undergoes carbonylation, it reacts with carbon monoxide (CO) in the presence of a catalyst, such as BF3 (Boron Trifluoride). The reaction can be represented as:
\[ \text{C}_2\text{H}_5\text{O}\text{C}_2\text{H}_5 + \text{CO} \xrightarrow{\text{BF}_3} \text{C}_2\text{H}_5\text{C(=O)O}\text{C}_2\text{H}_5 \]

4. **Formation of the Product**:
The product formed from this reaction is ethyl propanoate, which can be represented as:
\[ \text{C}_2\text{H}_5\text{C(=O)O}\text{C}_2\text{H}_5 \]
This compound is an ester where the ethyl group is attached to a propanoate group.

5. **Classifying the Product**:
Ethyl propanoate can be classified as an alkyl alkenoate. Here, "alkyl" refers to the ethyl group (C2H5) and "alkenoate" refers to the propanoate part of the molecule.

6. **Conclusion**:
Therefore, the answer to the question "Ether on carbonylation gives" is:
**Alkyl alkenoate** (specifically, ethyl propanoate).

### Final Answer:
The correct option is **C: Alkyl alkenoate**.